SG155800A1 - Manufacturing method of glass substrate for magnetic disc, manufacturing method of magnetic disc, and glass substrate holder - Google Patents

Manufacturing method of glass substrate for magnetic disc, manufacturing method of magnetic disc, and glass substrate holder

Info

Publication number
SG155800A1
SG155800A1 SG200802291-5A SG2008022915A SG155800A1 SG 155800 A1 SG155800 A1 SG 155800A1 SG 2008022915 A SG2008022915 A SG 2008022915A SG 155800 A1 SG155800 A1 SG 155800A1
Authority
SG
Singapore
Prior art keywords
glass substrate
manufacturing
magnetic disc
holder
substrate holder
Prior art date
Application number
SG200802291-5A
Inventor
Katsuyuki Iwata
Hideki Isono
Kenichiro Terada
Original Assignee
Hoya Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoya Corp filed Critical Hoya Corp
Priority to SG200802291-5A priority Critical patent/SG155800A1/en
Publication of SG155800A1 publication Critical patent/SG155800A1/en

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Landscapes

  • Manufacturing Of Magnetic Record Carriers (AREA)

Abstract

The manufacturing method uses a glass substrate holder which can prevent generation of misshape or warp of the glass substrate giving the glass substrate superior flatness and low roughness. The glass substrate holder 100 is used in a chemical strengthening processing step for carrying out ion exchange by dipping the glass substrate into a chemical strengthening processing solvent of molten chemical strengthening salt, and in a subsequent cooling step. The glass substrate holder includes a plurality of holding units 110, and a substrate heating unit 150 for, in a noncontacting manner, heating the part 116 of the glass substrate not in contact with the holding unit, and/or holder cooling units 160 for cooling the holding units. Thereby the change of temperature of the glass substrate becomes uniform.
SG200802291-5A 2008-03-24 2008-03-24 Manufacturing method of glass substrate for magnetic disc, manufacturing method of magnetic disc, and glass substrate holder SG155800A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SG200802291-5A SG155800A1 (en) 2008-03-24 2008-03-24 Manufacturing method of glass substrate for magnetic disc, manufacturing method of magnetic disc, and glass substrate holder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SG200802291-5A SG155800A1 (en) 2008-03-24 2008-03-24 Manufacturing method of glass substrate for magnetic disc, manufacturing method of magnetic disc, and glass substrate holder

Publications (1)

Publication Number Publication Date
SG155800A1 true SG155800A1 (en) 2009-10-29

Family

ID=41217492

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200802291-5A SG155800A1 (en) 2008-03-24 2008-03-24 Manufacturing method of glass substrate for magnetic disc, manufacturing method of magnetic disc, and glass substrate holder

Country Status (1)

Country Link
SG (1) SG155800A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013104589A1 (en) 2013-05-06 2014-11-20 Schott Ag Method for adjusting a warpage of a chemically tempered glass pane and glass pane to be produced according to the method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013104589A1 (en) 2013-05-06 2014-11-20 Schott Ag Method for adjusting a warpage of a chemically tempered glass pane and glass pane to be produced according to the method

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